Abstract: A method and a system for establishing a self-owned and self-managed network-based voice communication solution (VCS) for supporting business transactions and commerce applications over the communications network(s) including the Internet and PSTN. The voice communication solution is requested by a merchant or business entity at a computer connected to the Internet by providing (i) information needed for approval and (ii) system configuration for accepting the solution. Through a friendly interactive process with a web server and a solution server, the necessary software for voice communication is downloaded to a merchant's designated computer host, turning it to be a VCS server. Upon activation, the VCS server can support voice over IP (VOIP) communication and connect an incoming call to a telephone via PSTN or a PBX network. The VCS server can receive a VOIP call from anyone at anyplace via an Internet connected voice enabled computer.